| Summary: | 碩士 === 逢甲大學 === 材料科學與工程學系 === 103 === Methane reforming has been carried out by low temperature radio frequency (RF) plasma. The plasma was composed of mixture gas with different N2/CH4 flow ratios. In order to obtain optimal condition, several parameters, including RF powers and ratio of N2/CH4 flow rates were used to achieve the maximal yield of hydrogen and conversion of methane. The results indicate that 125 W of RF power under N2/CH4 flow rate of 8/24 showed 70% methane conversion rate and 50% hydrogen production yield without carbon catalyst. Temperature measuring of radio frequency plasma reactor which indicates 58oC with 125 W for a hour operation. Adding conductive carbon cloth (CC) and active carbon cloth (AC) can be the catalyst to enhance reforming efficiency. Through the analytic results of ICR and Raman, conductive carbon cloth has performance of higher conductivity and degree of graphitization than active carbon cloth. Therefore, hydrogen production yield increased from 50% to 56% and 60% when the AC and CC used. Conversion rate of CH4 increased from 70% to 78% and 84% as AC and CC. In comparison with CC, AC and without catalyst, CC has higher hydrogen production yield and higher conversion rate of CH4 than AC and without catalyst added.
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